Download The Earth`s Interior

The Earth’s Interior
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Crust (Lithosphere)
Mantle
Outer Core
Inner Core
Inner Core
• The deepest part of the
earth (1512 miles deep)
is a solid that contains
both iron and nickel.
• It is because of this that
the center of the earth is
a magnet, a compass.
• It generates a magnetic
field that protects the
earth from flying out of
orbit.
Outer Core
• Outside of the inner
core lays the outer
core (1419 miles deep).
• liquid nickel and iron
• also contains sulphur
and oxygen (which
lowers the melting
point).
Mantle
• Occupying 1789 miles
of the earth is the
magma (iron and
magnesium) that
makes up the mantle.
• Upper and lower
• It is extremely hot!!
• goopy; very plasticlike. (upper mantle)
• Mostly solid (lower
mantle)
Crust
• Also called lithosphere
• This is the top layer of the
earth, which is basically
hardened mantle (magma).
• It contains two segments,
the oceanic and continental
crusts.
• Note: this is the same crust,
it just depends how thick it
is to determine if it is part of
the Oceanic or Continental
Crust.
Crust…cont’d
• For instance, if you
drained all of the
water from earth, then
there would be one,
giant Continental
Crust.
• Likewise, if you
flooded everything,
you'd have one, giant
Oceanic Crust.
Read About Earth’s interior
• Our Text p. 4-6
The Earth’s Interior – Layer Names
Outer Core
Lithosphere
or crust
Mantle - Lower
Mantle - Upper
Inner Core
The Earth’s Interior - Composition
Liquid - magma
Solid – hardened
mantle
Mostly Solid
Goopy, plastic-like
Solid – iron & nickel